AS8323 CYFRONET-AS2 Academic Computer Centre CYFRONET AGH

CYFRONET-AS2 Academic Computer Centre CYFRONET AGH · registered in Poland

IPv4 addresses50,94416 prefixes · 0.002% of announced IPv4

Rank in Poland#32largest network in PL by IPv4 space, of 2,091 · 0.27% of PL

Rank worldwide#3,886of 79,396 networks with IPv4

IPv66 x /32 (458,736 x /48)16 prefixes

CountryPoland2,145 ASNs registered there

Open AS8323 in ASN lookup Look up an IP in this network (193.193.72.1) All networks in Poland

IPv4 prefixes

All 16 prefixes, in address order.

193.193.72.0/21
193.193.80.0/20
194.8.45.0/24
194.8.46.0/24
195.150.0.0/19
195.150.32.0/20
195.150.64.0/21
195.150.72.0/22
195.150.78.0/23
195.150.80.0/20
195.150.96.0/22
195.150.101.0/24
195.150.102.0/23
195.150.104.0/21
195.150.112.0/20
195.150.128.0/18

IPv6 prefixes

All 16 prefixes.

2001:6d9::/32
2001:6da::/31
2001:6dc::/31
2001:6de::/32
2001:6df::/33
2001:6df:8000::/34
2001:6df:c000::/35
2001:6df:e000::/36
2001:6df:f000::/37
2001:6df:f800::/38
2001:6df:fc00::/39
2001:6df:fe00::/40
2001:6df:ff00::/41
2001:6df:ff80::/42
2001:6df:ffc0::/43
2001:6df:ffe0::/44

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AS13000#33 LEON-AS Leon Sp. z o.o.50,432

AS29167#34 BSA-PLUS-INTERNET Netia SA49,152

AS43939#35 INTERNETIA_ETTH2-AS Netia SA43,008

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources